Reed with detachable dents



Nov. 1, 193s. J s, HALL 2,135,136

REED WITH DETACHABLE DENTS' Filed Feb. 18, 1935 lala la e:

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Patented Nov. 1, 1938 i REED WITH DETAOHABLE DENTS James S'. Hall, Methuen, Mass., assigner to Emmons Loom Harness Company, Lawrence, Mass., a corporation of Massachusetts Application February 18, 1938, Serial No. 191,223

2 Claims.

reeds comprising parallel dents held together attheir ends in various ways have come into use. The ends of the dents are rigidly held together as by one or more ribs and a coil of wire, all three soldered together. f

The purpose of this invention is to provide an.

all-metal reed which will have the flexibility of a pitchback or wood and twine reed, tgether with the Wearing `qualities of an all-metal reed, and one in which adjoining dents will yield to permit a slub on the'warp thread to pass but will close up after its passage and in which a broken or injured dent can readily be removed and replaced by another.

It is an improvement on the construction shown in the patent to Gourdeau, Spacing device for warps, No. 954,512, April 12, 1910 in which construction it was intended that a single dent could be removed and replaced,v and on the patent to I-Iorning, Loom reed `and method and apparatus for its manufacture, No. 2,008,504, July 16, 1935, which shows two sets of largesegmental wooden ribs with two large coils of wire and two sets of small segmental metal ribs, each set rigidly soldered to a small coil of wire and tothe dents ywhich pass between the members -of all four sets Vof ribs. 1

In my preferred construction, the edges of the dents on the side vof the reed which isj next to the warp beam and which will rst receive a slub are held lessclosely by the turns fa coil of wire than the edges on the side which is 'nearest the cloth. On the `side of the reed which is nearest to the cloth, the Wire coils and halfround ribs are soldered, whereby a slub can more easily enter and gradually work its way through adjoining dents than if the entering edge was rigid, While the side which beats up the filling the warp threads in the cloth.

I use dents with'no notches and no blocks but hold them from slipping out endwise by split tubes so that by slipping 01T one tube any single dent can be pulled out endwise and can immepreserves the desirable accurate spacing between front of a `reed with the construction. Y

Fig. 2v is an elevation from the back off a reed with parts broken away to show the construction.

Fig. 3 is an enlarged-elevation of the top end of a reed such asshown in Figs. 1 and 2.

Fig. 4 isi an enlarged sectional elevation looking in the direction of the arrow on line 4 4 of Fig. 1. Fig. 5 is an enlarged horizontal section looking down on the line 5 5 of Fig. 1;

Fig. 6 is an enlarged horizontal section looking. down on the line 6 6 of Fig. 1.

Fig. 7 is a sectioinal view similar to Fig. 6 showing the parts of somewhat .different sizes.

Fig. 8 is a view, not in section, similar to Fig. 7 of the modication.

Fig. 9 is an enlarged fragmentary elevation of a reed from the back with a dent being removed.

Fig. 10 is a View similar to Fig. 9 showing dents bent at the end.

Fig. .l1 is an enlarged elevation of the upper left hand end shown in Fig. 1 but with the covering tube removed. v

Fig. 12 is a horizontal section looking down on the line I2 |2 of Fig. 11. y 1

Fig. 13 is an enlarged detail view similar to Fig'. 4'

In the drawing, I-I, I-I. represent headers of substantially rectangular shape and made of metal, each having near eachend and on the outside a substantially rectangular recess or notch i. D, D represent dents of the usual construction of flat thin metal.

NearV each end of the dents on the `front and back is a set of large ribs L and L1. -Of these, L is soldered and L1 is free and preferably at the back. The twov ribs near each end form a set. Both ends'such as 2, 2 of the ribs L, L are bent at right anglesA into the header recesses l, I as vshown invFigs. ll'and 12. y Y

C, C. represent large coilsof wire each of which enclose each set of two large ribs L, L1. As shown, there is a turn 3 of each coil between each two adjoining dents such as D, D. The diameter of the wire of each coil may be exactly the same as the space between the dents or, as shown in Fig. 7, the diameter may be less than that space.

A, A1 represent small segmental ribs of which there are two sets, each set including two ribs, A being soldered and A1 being free. Each set of small ribs is ,located nearer the middle of the reed than the large sets of ribs L, L1 and each rset `of small ribs is enclosed by a small coil of wire F. As shown, each turn 4 of each small parts broken away to show coil passes between the adjoining dents and, as shown in Figs. 1 to 6, the wire of both coils C, C is of a diameter to exactly ll the space between the adjoining dents.

The wire of each coil F preferably is of slightly less diameter so that the dents may yield slightly sideways but will immediately be brought back to alinement, as after a slub has passed.

On one side of the reed, which I will call the front, the curved surface of the large rib L on that side is soldered by solder` S to the adjoining part of coil C and the curved surface of the adjoining small rib A is soldered to the adjoining part of coil F, this solder also extending between the turns of coils C and F and between the adjoining ribs L and A at I2.

This solder represented by S extends from the outer edge l' of a large rib along the line which coincides with the front edge of the row of dents around the curved surface and between the dents of the coilA to the inner edge of the large rib at il, thence at I2 across to the `outer edge I3 of the adjoining small rib,'thence around the curved surface of this rib and between the turns of the coil F to the inner edge i4 of the small rib. The Solder, therefore, makes a rigid frontat the top and bottom from which the free parts 1, 8 of the coils C and F project. If the solder does not touch the dents, it is clear that by removing all four of the ribs, L1, L1 and A1, A1,Y one dent or many dents can be lifted out from the back side when it is necessary to make repairs and others can be put in their places, after which the four ribs can be replaced.

As shown in Fig. 9, without removing any of the ribs, if there were no cap such as T or by removing the cap, any individual dent can be pulled out without touching any of the ribs.

However, to prevent dents from dropping out from between the coils and rib-s, I use a special cap at the top and bottom in the form of a split tube T, the split 3D being of a width to fit the space between the large and small ribs and large and small coils, engaging the solderalong the line l2. Preferably the end 3l of each dent touches or is close to the inside of this cap as shown in Fig. 3.

In place of using such a cap or with it, however, I can use what is known as a Cornish, shown at 32 in Fig. l0. This cornish is the bend at the end of each dent and this holds it in place from slipping out but at the same time, by removing the four ribs, it can be removed from the back.

The arrangement of the parts is shown diagrammatically in Figs. 5, 6 and '7.

Preferably the diameter of a wire of coil F is slightly less than that of coil C. As shown in Fig. 6, there is no space between the turns of wire C and the dents, although actually there is usually a small space, but there is a Space between the dents and the turns of coil F, as `shown soldered each set.

in Fig. 5, so that each dent can move a little laterally and adjoining dents can open up slightly so as to allow a slub to pass. Actually there can be a slight lateral yielding of the free part of the turns of the wire C. Such a slight yielding is desirable, especially at the back or the free side of the coils which preferably is nearer the warp beam than the fixed or front side which is toward the cloth. This allows thick places and slubs to pass more readily.

As shown in Fig. '7, in some cases I prefer to vleave spaces between the turns of a large coil such as N and the dents P so that While the front side where the Vrib M is Xed and soldered to the coil by solder S is rigid, the dents N can move slightly to the right or left or turn but will always come back substantially in place although the spacing between the warp threads in the cloth will always be uniform and without streaks.

In some cases, as shown inFig. 8, I may use dents such as B which are thicker at one edge than at the other. In such a case, I preferably locate the thick edge 2l! next tothe fixed rib A rather than the loose rib A1.

I claim:

1. In a reed for looms, the combination of parallel headers, each of rectangular cross section andeach having a notch in the upper outside edge ;V with two outside parallelsets of large segmental metal ribs, one end of each member of each set being bent into a notch; a large coil of wire enclosing each set of large rib-s and `soldered to the cylindrical surface of one rib of each set,

,the turns of each coil being oppositely wound;

small ribs and 4soldered to the cylindrical surface of one member of each set, the turns of each small coil lbeing oppositely wound; dents passed between the turns of all four sets of coils, between a soldered rib and an unsoldered rib, the outside end of each dent being bent to hold it in place; and a cover formed of a longitudinally split metal tube, the edges of the split coming between a large and a small coil. Y

2. I n a reed for looms, two outside parallel sets of large segmental metal ribs; a large coil of wire enclosing each set of large ribs and soldered to the cylindrical surface of one member; two inside parallel sets of small segmental metal ribs positioned inside the large ribs; a small coil of wire enclosing each set ofhsmall ribs and soldered to the cylindrical surface of one member thereof,` the solder. extending between the large and small ribsfand coils/and outside the dents; .headersl connecting and holding togetherk all of said parallel segmental ribs;V andk dents passed between the turnsV ofy all four of the coils and between the and the VHunsoldered segmental ribs of JAMEss. HALL. 

